6 to 8 hrs for digestion. it stays in the stomach for 2 hours and then in the intestine for another 2 hours. the undigested food goes to the large intestine and the digested food goes to whole body through blood. Carbhydrates and proteins about 1 1/2 -2 hrs. Fats 2 hrs.
And based on that a foetus does not posses self-awareness. Human babies have been found to become self aware between the ages of 18-24 months. The rouge test is a self-recognition test that identifies a human child's ability to recognize a reflection in a mirror as his or her own.
This research-based post will help you to better understand your 15 to 24 month old child. You are here: Home Developmental Timeline Baby begins to develop self-awareness. Sometime between 15 and 24 months, children take a large step in self-awareness. In an experiment known as the rouge test, mothers wiped a bit of rouge on the noses of their children and placed them in front of a mirror. Before 15 months, children look at the reflection and see a red spot on the nose in the mirror, but they don't realize that the red spot is on their own nose.